Fixing support of hydrogen circulation system and fuel cell system using fixing support

Abstract

The utility model relates to the field of supports, and discloses a fixing support of a hydrogen circulation system and a fuel cell system using the same, the fixing support comprises a first mounting plate, the first mounting plate is provided with a first mounting hole, and the first mounting plate is connected with a hydrogen circulation pump through the first mounting hole; the second mounting plate is connected to one end of the first mounting plate, a second mounting hole is formed in the second mounting plate, and the second mounting plate is connected with an ejector through the second mounting hole; the third mounting hole is formed in one end, far away from the second mounting plate, of the first mounting plate. According to the utility model, the first mounting plate and the second mounting plate are respectively connected with the hydrogen circulating pump and the ejector, so that the integration of the hydrogen circulating pump and the ejector is realized, the problem that the hydrogen circulating pump and the ejector are independently provided with brackets is avoided, the integration level of the fuel cell system is improved, and the production cost is reduced. And the space occupied by the hydrogen circulating pump and the ejector in the fuel cell system is reduced.

Description

Technical Field

[0001] The utility model relates to the field of brackets, in particular to a fixing bracket of a hydrogen circulation system and a fuel cell system using the fixing bracket. Background Art

[0002] With the continuous development of the global economy, people's demand for energy is also increasing. The consumption of traditional energy sources also generates a large amount of pollution. The development of clean energy alternatives is becoming increasingly important. Fuel cells are chemical devices that directly convert the chemical energy of fuel into electrical energy. Also known as electrochemical generators, they are the fourth power generation technology after hydropower, thermal power, and nuclear power. Fuel cells offer advantages such as high power generation efficiency and low harmful emissions. In recent years, fuel cells have attracted widespread attention due to their high efficiency and pollution-free nature, and have been widely used in many fields.

[0003] The hydrogen circulation system in a fuel cell system is a key component of the fuel cell power module, used to deliver hydrogen to the fuel cell system's cells and recycle the hydrogen exhaust. In a hydrogen circulation system, a hydrogen circulation pump is typically used to power the hydrogen circulation, and an ejector assists in the hydrogen circulation. However, existing hydrogen circulation pumps and ejectors are typically connected separately to the fuel cell stack (the hydrogen circulation pump and ejector must be installed on the fuel cell stack using separate fixed brackets). This results in a low level of integration in existing fuel cell systems, and the installation of the hydrogen circulation pump and ejector requires a significant amount of space, resulting in low space utilization for the entire fuel cell system.

[0004] Fuel cell systems generally include some electronic and electrical products such as air compressors, water pumps, gas-water separators, ejectors, intercoolers, coolers, and transformers. Therefore, a closed metal box is required to protect the electronic and electrical products. At present, for fuel cell systems for vehicles with non-enclosed stack shells, a small amount of hydrogen will leak out during the operation of the system. A closed metal box is required to ensure the sealing, and the gas is purged inside the box and discharged through the exhaust pipe into the tail pipe of the box. The fuel cell stack is a high-voltage power generation device. It is necessary to ensure that the coolant in the cooling pipe of the fuel cell stack does not conduct with the box when passing through the metal box interface. The metal box of the existing technology mainly uses welded metal pagoda joints to ensure the sealing of the box, but has no insulation effect; or the box interface is embedded with insulating material in the side wall as a whole, but the processing process is complicated and the cost is high; the existing pagoda joint structure is complex and difficult to process, resulting in high processing costs. Utility Model Content

[0005] The present invention aims to solve the above problems and provides a fixing bracket for a hydrogen circulation system and a fuel cell system using the same, so as to solve the problems that the existing fuel cell system has low integration, the hydrogen circulation pump and the ejector need to be provided with separate brackets, resulting in a large space occupation and low space utilization of the fuel cell system.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A fixing bracket for a hydrogen circulation system, comprising:

[0008] a first mounting plate, wherein a first mounting hole is provided on the first mounting plate, and the first mounting plate is connected to the hydrogen circulation pump through the first mounting hole;

[0009] A second mounting plate is connected to one end of the first mounting plate, the second mounting plate is provided with a second mounting hole, and the second mounting plate is connected to the ejector through the second mounting hole;

[0010] The third mounting hole is located at an end of the first mounting plate away from the second mounting plate, and the first mounting plate is connected to the battery through the third mounting hole.

[0011] Preferably, the second mounting plate is arranged at an angle, and the angle between the second mounting plate and the first mounting plate is 4°-7°.

[0012] Preferably, it also includes an anti-interference groove; the anti-interference groove is provided on the first mounting plate, and the anti-interference groove is used to prevent the hydrogen circulation pump from colliding with the first mounting plate.

[0013] Preferably, it also includes a drainage hole;

[0014] The drainage hole is provided in the anti-interference groove, and the drainage hole is used to drain the accumulated water in the anti-interference groove.

[0015] Preferably, it further comprises a third mounting plate;

[0016] The third mounting plate is vertically connected to the bottom of the first mounting plate. A fourth mounting hole is provided on the third mounting plate. The third mounting plate is connected to the battery through the fourth mounting hole.

[0017] Preferably, when the third mounting plate is vertically connected to the bottom of the first mounting plate, the third mounting plate divides the first mounting plate into a clamping portion and an extension portion, the third mounting hole is provided in the clamping portion, and the extension portion is connected to the second mounting plate.

[0018] Preferably, it further comprises a first reinforcing rib and a second reinforcing rib;

[0019] The first reinforcing ribs are provided on the bottom surfaces of the extension portion and the second mounting plate, and the first reinforcing ribs are used to improve the structural strength of the extension portion and the second mounting plate;

[0020] The second reinforcing rib is connected to the first reinforcing rib, and the second reinforcing rib is arranged along the width direction of the third mounting plate. The second reinforcing rib is used to improve the structural strength of the third mounting plate.

[0021] Preferably, the first reinforcing rib is a cross-shaped structure.

[0022] Preferably, it further comprises a fourth mounting plate;

[0023] The fourth mounting plate is vertically connected to the bottom of the second mounting plate. A fifth mounting hole is provided on the fourth mounting plate. The fourth mounting plate is connected to the battery through the fifth mounting hole.

[0024] A fuel cell system includes a stack upper cover plate, a stack front end plate and the above-mentioned fixing bracket; the first mounting plate is connected to the stack upper cover plate through a third mounting hole, and the third mounting plate is connected to the stack front end plate through a fourth mounting hole.

[0025] The contribution of the present utility model is that by connecting the first mounting plate and the second mounting plate to the hydrogen circulation pump and the ejector respectively, the integration of the hydrogen circulation pump and the ejector is realized, thereby avoiding the problem of separately arranging brackets for the hydrogen circulation pump and the ejector, improving the integration of the fuel cell system, and reducing the space occupied by the hydrogen circulation pump and the ejector in the fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of a fixing bracket according to one embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the utility model when the hydrogen circulation pump and the ejector are installed on the fixed bracket;

[0028] Figure 3 yes Figure 1 Structural diagram from another angle;

[0029] Figure 4 This is a bottom view of the fixing bracket of the utility model;

[0030] Figure 5 yes Figure 4 Structural diagram from another angle;

[0031] Figure 6 This is a schematic structural diagram of a fixing bracket according to another embodiment of the present invention;

[0032] Figure 7 yes Figure 6 Bottom view of

[0033] Figure 8 This is a structural schematic diagram of the utility model when the fixing bracket integrating the hydrogen circulation pump and the ejector is installed on the battery of the fuel cell system.

[0034] Among them: the first mounting plate 10, the first mounting hole 11, the clamping part 12, the extension part 13, the second mounting plate 20, the second mounting hole 21, the third mounting hole 30, the anti-interference groove 40, the drainage hole 50, the third mounting plate 60, the fourth mounting hole 61, the first reinforcing rib 70, the second reinforcing rib 80, the fourth mounting plate 90, the fifth mounting hole 91, the stack upper cover plate 1a, the stack front end plate 1b, the hydrogen circulation pump 1c, and the ejector 1d. DETAILED DESCRIPTION

[0035] The following examples are provided to further explain and supplement the present invention and do not constitute any limitation to the present invention.

[0036] like Figure 1-2 As shown, a fixing bracket of a hydrogen circulation system includes: a first mounting plate 10, a first mounting hole 11 is provided on the first mounting plate 10, and the first mounting plate 10 is connected to the hydrogen circulation pump 1c through the first mounting hole 11; a second mounting plate 20 is connected to one end of the first mounting plate 10, a second mounting hole 21 is provided on the second mounting plate 20, and the second mounting plate 20 is connected to the ejector 1d through the second mounting hole 21; a third mounting hole 30 is located at one end of the first mounting plate 10 away from the second mounting plate 20, and the first mounting plate 10 is connected to the battery through the third mounting hole 30.

[0037] The first mounting plate 10 is used to connect the hydrogen circulation pump 1c. Specifically, a first mounting hole 11 is provided on the first mounting plate 10. The hydrogen circulation pump 1c is connected to the first mounting plate 10 through the first mounting hole 11. A second mounting plate 20 is connected to one end of the first mounting plate 10. The second mounting plate 20 is used to connect the ejector 1d. The hydrogen circulation pump 1c and the ejector 1d are integrated into a fixed bracket through the first mounting plate 10 and the second mounting plate 20. There is no need for the hydrogen circulation pump 1c and the ejector 1d to be fixed and installed separately with a bracket, thereby reducing the space occupied by the hydrogen circulation pump 1c and the ejector 1d in the battery and improving the integration of the battery.

[0038] The third mounting hole 30 is used to connect the first mounting plate 10 to the battery, so that the hydrogen circulation pump 1c and the ejector 1d are integrated into the fixing bracket composed of the first mounting plate 10 and the second mounting plate 20 and can be installed on the battery.

[0039] The utility model realizes the integration of the hydrogen circulation pump 1c and the ejector 1d by connecting the first mounting plate 10 and the second mounting plate 20 to the hydrogen circulation pump 1c and the ejector 1d respectively, thereby avoiding the problem of setting up a bracket for the hydrogen circulation pump 1c and the ejector 1d separately from the battery, improving the integration of the battery, and reducing the space occupied by the hydrogen circulation pump 1c and the ejector 1d.

[0040] To further explain, the second mounting plate 20 is tilted, and the angle between the second mounting plate 20 and the first mounting plate 10 is 4°-7°.

[0041] In this embodiment, the second mounting plate 20 is tilted, and the tilt angle is between 4° and 7°. The reason for tilting the second mounting plate 20 is to tilt the ejector 1d installed on the second mounting plate 20 to avoid backflow of the liquid medium during operation and rusting of the electromagnetic valve components at the rear end of the ejector 1d. Preferably, in this embodiment, the tilt angle can be set to 5°, which can better prevent the backflow of the liquid medium and protect the ejector 1d.

[0042] To further explain, the tilt direction of the second mounting plate 20 is related to the installation direction of the hydrogen circulation pump 1 c . Specifically, the tilt direction and angle of the second mounting plate 20 are determined based on the orientation of the hydrogen circulation pump 1 c .

[0043] In this embodiment, an anti-interference groove 40 is also included;

[0044] like Figure 3 As shown, the anti-interference groove 40 is provided on the first mounting plate 10 , and the anti-interference groove 40 is used to prevent the hydrogen circulation pump 1 c from colliding with the first mounting plate 10 .

[0045] An anti-interference groove 40 is installed on the first mounting plate 10. The anti-interference groove 40 is used to prevent the hydrogen circulation pump 1c from directly colliding with the first mounting plate 10. Specifically, the bottom of the hydrogen circulation pump 1c is generally slightly raised. Due to human errors in the process of connecting the hydrogen circulation pump 1c to the first mounting plate 10 through the first mounting hole 11, the hydrogen circulation pump 1c will inevitably be slightly skewed, causing the bottom of the hydrogen circulation pump 1c to collide and squeeze with the first mounting plate 10, causing the first mounting plate 10 to deform or the hydrogen circulation pump 1c to be damaged. By providing an anti-interference groove 40 matching the hydrogen circulation pump 1c on the first mounting plate 10, it is possible to avoid direct collision and squeezing of the hydrogen circulation pump 1c with the first mounting plate 10, thereby protecting the hydrogen circulation pump 1c and the first mounting plate 10 to the greatest extent.

[0046] In this embodiment, a drainage hole 50 is also included;

[0047] like Figure 3As shown, the drainage hole 50 is provided in the anti-interference groove 40 , and the drainage hole 50 is used to drain the accumulated water in the anti-interference groove 40 .

[0048] A drainage hole 50 is provided in the anti-interference groove 40, and the drainage hole 50 can drain the accumulated water in the anti-interference groove 40. Specifically, rainwater from the outside will accumulate in the anti-interference groove 40, causing the bottom of the hydrogen circulation pump 1c to be immersed in water for a long time, which will accelerate the corrosion of the bottom of the hydrogen circulation pump 1c. By providing the drainage hole 50 in the anti-interference groove 40, the accumulated water in the anti-interference groove 40 can be discharged in time, thereby avoiding corrosion of the bottom of the hydrogen circulation pump 1c.

[0049] In this embodiment, a third mounting plate 60 is also included;

[0050] like Figure 3 As shown, the third mounting plate 60 is vertically connected to the bottom of the first mounting plate 10 , and a fourth mounting hole 61 is provided on the third mounting plate 60 , through which the third mounting plate 60 is connected to the battery.

[0051] A third mounting plate 60 is provided at the bottom of the first mounting plate 10 and is perpendicular to the first mounting plate 10, and the third mounting plate 60 is connected to the battery through the fourth mounting hole 61 on the third mounting plate 60. Specifically, since the first mounting plate 10 and the third mounting plate 60 are perpendicular to each other, there are also two sets of mutually perpendicular mounting points between the first mounting hole 11 and the fourth mounting hole 61. The first mounting plate 10 and the third mounting plate 60 are fixedly connected to the battery through the mutually perpendicular mounting points, which can greatly improve the stability of the fixing bracket.

[0052] Further explanation, such as Figure 4 As shown, when the third mounting plate 60 is vertically connected to the bottom of the first mounting plate 10, the third mounting plate 60 divides the first mounting plate 10 into a clamping portion 12 and an extension portion 13, the third mounting hole 30 is provided in the clamping portion 12, and the extension portion 13 is connected to the second mounting plate 20.

[0053] Specifically, when the space on the upper cover plate 1a of the fuel cell system is limited, the second mounting plate 20 cannot be directly connected to the upper cover plate 1a of the fuel cell stack, and parts of the first mounting plate 10 and the second mounting plate 20 will be exposed to the outside of the fuel cell stack. At this time, the first mounting plate 10 is divided into two parts by the third mounting plate 60, namely the clamping part 12 and the extension part 13. The clamping part 12 cooperates with the third mounting plate 60 to install the fixed bracket on the fuel cell stack. The extension part 13 will be suspended outside the fuel cell stack due to insufficient space on the upper cover plate 1a of the fuel cell stack.

[0054] Further explanation, such as Figure 4-5 As shown, it also includes a first reinforcing rib 70 and a second reinforcing rib 80;

[0055] The first reinforcing rib 70 is arranged on the bottom surface of the extension portion 13 and the second mounting plate 20, and the first reinforcing rib 70 is used to improve the structural strength of the extension portion 13 and the second mounting plate 20; the second reinforcing rib 80 is connected to the first reinforcing rib 70, and the second reinforcing rib 80 is arranged along the width direction of the third mounting plate 60, and the second reinforcing rib 80 is used to improve the structural strength of the third mounting plate 60.

[0056] A first reinforcing rib 70 is provided at the bottom of the extension portion 13 and the second mounting plate 20, and a second reinforcing rib 80 is provided on the side of the third mounting plate 60 away from the clamping portion 12. The first reinforcing rib 70 and the second reinforcing rib 80 are connected. The pressure exerted on the extension portion 13 and the second mounting plate 20 will be partially shared by the third mounting plate 60, thereby improving the compressive resistance of the extension portion 13 and the second mounting plate 20 and avoiding premature deformation of the extension portion 13 and the second mounting plate 20.

[0057] To further explain, the first reinforcing rib 70 is a cross-shaped structure.

[0058] The first reinforcing rib 70 adopts a cross-shaped structure, which can strengthen the compressive performance of the extension portion 13 and the second mounting plate 20 in both horizontal and vertical directions, ensuring that the extension portion 13 and the second mounting plate 20 will not deform prematurely.

[0059] In another embodiment of the present application, a fourth mounting plate 90 is further included;

[0060] like Figure 6-7 As shown, the fourth mounting plate 90 is vertically connected to the bottom of the second mounting plate 20 , and a fifth mounting hole 91 is provided on the fourth mounting plate 90 , through which the fourth mounting plate 90 is connected to the fuel cell stack.

[0061] In this embodiment, since there is sufficient space on the upper cover plate 1a of the fuel cell stack, the first mounting plate 10 can be placed entirely on the upper cover plate 1a of the fuel cell stack. At this time, the fourth mounting plate 90 only needs to be vertically connected to the bottom of the second mounting plate 20, and there is no need to set reinforcing ribs on the second mounting plate 20 and the third mounting plate 60.

[0062] like Figure 8 As shown, a fuel cell system includes a stack upper cover plate 1a, a stack front end plate 1b and the above-mentioned fixing bracket;

[0063] The first mounting plate 10 is connected to the stack upper cover plate 1 a through the third mounting hole 30 , and the third mounting plate 60 is connected to the stack front end plate 1 b through the fourth mounting hole 61 .

[0064] The first mounting plate 10 is connected to the upper cover plate 1a of the battery stack, and the third mounting plate 60 is connected to the front end plate 1b of the battery stack. The first mounting plate 10 and the third mounting plate 60 are perpendicular to each other. The perpendicular connection method can provide higher structural strength and enable the fixing bracket to be better fixed on the battery.

[0065] Although the present invention is disclosed through the above embodiments, the protection scope of the present invention is not limited thereto. Without departing from the concept of the present invention, any deformation or replacement of the above components shall fall within the scope of the claims of the present invention.

Claims

1. A fixing bracket for a hydrogen circulation system, characterized in that: include: a first mounting plate, wherein a first mounting hole is provided on the first mounting plate, and the first mounting plate is connected to the hydrogen circulation pump through the first mounting hole; A second mounting plate is connected to one end of the first mounting plate, the second mounting plate is provided with a second mounting hole, and the second mounting plate is connected to the ejector through the second mounting hole; The third mounting hole is located at an end of the first mounting plate away from the second mounting plate, and the first mounting plate is connected to the battery through the third mounting hole.

2. The fixing bracket of the hydrogen circulation system according to claim 1, characterized in that: The second mounting plate is tilted, and the angle between the second mounting plate and the first mounting plate is 4°-7°.

3. The fixing bracket of the hydrogen circulation system according to claim 2, characterized in that: Also includes anti-interference slots; The anti-interference groove is provided on the first mounting plate, and the anti-interference groove is used to prevent the hydrogen circulation pump from colliding with the first mounting plate.

4. The fixing bracket of the hydrogen circulation system according to claim 3, characterized in that: Also includes drainage holes; The drainage hole is provided in the anti-interference groove, and the drainage hole is used to drain the accumulated water in the anti-interference groove.

5. A fixing bracket for a hydrogen circulation system according to any one of claims 1 to 4, characterized in that: Also included is a third mounting plate; The third mounting plate is vertically connected to the bottom of the first mounting plate. A fourth mounting hole is provided on the third mounting plate. The third mounting plate is connected to the battery through the fourth mounting hole.

6. The fixing bracket of the hydrogen circulation system according to claim 5, characterized in that: When the third mounting plate is vertically connected to the bottom of the first mounting plate, the third mounting plate divides the first mounting plate into a clamping portion and an extension portion, the third mounting hole is provided in the clamping portion, and the extension portion is connected to the second mounting plate.

7. The fixing bracket of the hydrogen circulation system according to claim 6, characterized in that: Also includes a first reinforcing rib and a second reinforcing rib; The first reinforcing ribs are provided on the bottom surfaces of the extension portion and the second mounting plate, and the first reinforcing ribs are used to improve the structural strength of the extension portion and the second mounting plate; The second reinforcing rib is connected to the first reinforcing rib, and the second reinforcing rib is arranged along the width direction of the third mounting plate. The second reinforcing rib is used to improve the structural strength of the third mounting plate.

8. The fixing bracket of the hydrogen circulation system according to claim 7, characterized in that: The first reinforcing rib is a cross-shaped structure.

9. A fixing bracket for a hydrogen circulation system according to any one of claims 1 to 4, characterized in that: Also included is a fourth mounting plate; The fourth mounting plate is vertically connected to the bottom of the second mounting plate. A fifth mounting hole is provided on the fourth mounting plate. The fourth mounting plate is connected to the battery through the fifth mounting hole.

10. A fuel cell system, characterized in that: It comprises a stack upper cover plate, a stack front end plate and a fixing bracket according to any one of claims 5 to 8; The first mounting plate is connected to the stack upper cover plate through the third mounting hole, and the third mounting plate is connected to the battery front end plate through the fourth mounting hole.

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